@misc{indiciaec14747d96617,
  title = {Synthesis and Assimilation Systems - Essential Adjuncts to the Observing System},
  author = {Rienecker, Michele M. and Lee, Tong},
  year = {2009},
  url = {https://ntrs.nasa.gov/citations/20090042709},
  note = {Source identifier: 20090042709}
}